Malicious PDF — malware analysis report

Static analysis result for SHA-256 9feb103cdda6295b…

MALICIOUS

PDF

79.5 KB Created: 2021-02-27 07:11:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 30b25c721ccb42121e2bef3887a2257f SHA-1: c6dfa8365993ce872598390589644115b23ae922 SHA-256: 9feb103cdda6295b074a4885937e9faab3eb000b6cd379aa0a9e417a3f5b9f8c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://dugedepap.ru/award?keyword=what+is+the+best+rail+for+ar+15 PDF link annotation
    • https://balijijileg.weebly.com/uploads/1/3/4/5/134505585/9663570.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/iiduSRW/9430550481.pdfIn PDF document text
    • http://hookup153.fun/electric_guitar_for_beginners0alp4.pdfIn PDF document text
    • https://penizamuravepu.weebly.com/uploads/1/3/5/9/135976181/4281c.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/gchigeV/word_blocksatz_letzte_zeile_links.pdfIn PDF document text
    • http://aazzzry.space/sixumibatikawujizupk4xjo.pdfIn PDF document text
    • https://nalovitifa.weebly.com/uploads/1/3/4/6/134600698/pimegoxo_rexor_kixolu_favubobopod.pdfIn PDF document text
    • https://suruwizad.weebly.com/uploads/1/3/4/7/134766156/00c3fe0f826c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/google_font_stylesheet_link.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/how_to_make_a_pop_up_book_ks1.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/tiwafolizoxigebiguwuxidis.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/ways_to_pray_for_your_future_husband.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/vlookup_if_error_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/fesupudonole.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/cannot_resolve_symbol_appcompatactivity_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/80808365930.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/19417999801.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/91893464882.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDF 5184 bytes
SHA-256: 0c633a24d28ac4230797013b6416c9ae74b8017814cda12bc4230b320d67a729
font_01_sfnt_off00010d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D95 10412 bytes
SHA-256: aba772b339ed8fe266e136d978b4c5099345d4d79ba4a93fd8887233b238f5e0

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